Knock sensor location

Tiny
DENMONK
  • MEMBER
  • 2002 NISSAN XTERRA
  • 6 CYL
  • 4WD
  • 200 MILES
Can anyone help with location of knock sensor for 2002 xterra S/C. Is it internal or external?
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Wednesday, December 15th, 2010 AT 3:31 PM

31 Replies

Tiny
DOCFIXIT
  • EXPERT
Hello,

The knock sensor is located under the intake manifold between the cylinder heads on the engine block.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed. Cheers.
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Wednesday, December 15th, 2010 AT 3:42 PM
Tiny
SANDY78
  • MEMBER
  • 2002 NISSAN XTERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 86,000 MILES
Hello, I cant find the knock sensor on my Xterra. I was told it was right on top, but I cant find it. Can you help me. Can you send me a picture or something?
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
The knock sensor is attached to the cylinder block-See below:

Knock Sensor


http://www.2carpros.com/forum/automotive_pictures/12900_k_4.gif

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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
20-XTERRA-02
  • MEMBER
Is this picture showing the front of the engine to the lower right or the upper left. I have an 02-X 3.3, took the upper manifold off, and didn't see it there either. Is it on the backside of my block close to the firewall, cause I can't seem to find it. Would love it if someone had an actual (( clear )) pic.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
SHELLYS
  • MEMBER
  • 2004 NISSAN XTERRA
  • 100,000 MILES
Cannot find the knock sensor under the the intake manifold
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
FIXITMR
  • MEMBER
Did you buy new 1 so you know what your lookin for?
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
FIXITMR
  • MEMBER
It's a 3.3 right? Cant miss it.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
RICHARDMCM
  • MEMBER
  • 2003 NISSAN XTERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 96,000 MILES
Where is the knock sensor located showing high out put I was told this mean it is over torqued if so what is the torque spec and where is it located on a v6 can it be reached easy with have to remove have the engine do I need a special tool
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
The knock sensor is located on top rear of engine see item no.3 below


http://www.2carpros.com/forum/automotive_pictures/12900_ks_3.jpg

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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
LSAUTO
  • MEMBER
The only problem I have with this picture is that it doesnt tell u that the knock senser is located under the lower intake manafold asmb the upper and lower intak manafold must be removed too replace this part it is a very involved repair lsauto
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
DANNIB
  • MEMBER
  • 2002 NISSAN XTERRA
  • 79,000 MILES
How to replace the knock sensor on a 2002 Nissan Xterra with a Super Charger. Also, where is it located? Thank you for your support & concern. All are doing great providing superb answer.

Service engine soon light came on. Our Hobby shop mechanic connected a code reader & said the knock sensor is bad.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
3 hours for a shop to replace it. A code number never identifies a bad part, just a failed system. To throw a 200 dollar sensor in on a guess is expensive.

The intake manifold needs to be removed.

Get a shop to confirm this before you spend this money.

Roy
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
S MOORE
  • MEMBER
  • 2002 NISSAN XTERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
What are the details in replacing a knock sensor
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Hi s moore,

Not much details.

Find the sensor, unplug the wire socket, remove the holding bolt and you are ready to reinstall.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
LEOPARDLOVE
  • MEMBER
  • 2002 NISSAN XTERRA
  • 3.3L
  • V6
  • 2WD
  • 107,000 MILES
My car turned off on me while I was very low on gas so I automatically assumed I ran out, but I still had well enough to get to a gas station. So I filled up and it would not start. I tried a jump start thinking it could be the battery, but the lights and everything seemed to work so I do not think it was the battery. It did not start with jump. My oil was pretty bad so thought that could be the problem, changed oil and filter, still no turn over just makes a "wants to start " noise. Hooked a diognostic machine. Says it is a knock sensor.
Tried to do some research and seems there may be some doubts from other people with same car whether this is in fact the problem. What might be another possibility? Please
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
CARADIODOC
  • EXPERT
Your observation about the battery is correct, at least for now, and until testing points to it later.

Your assumption about the oil is not correct. The starting system has no idea of the oil's condition. They do not talk with each other!

There is a clinker in your thinker about the knock sensor. First of all, that circuit wont prevent the engine from cranking or from running. Second, diagnostic fault codes never say to replace a part or that one is bad. They only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. When a part is referenced in a fault code, that part is actually the cause of that code about half of the time. First we have to rule out wiring, connector terminal, and mechanical problems associated with that part.

The next problem is I really do not know what the symptom is or which system we need to look at. You said the engine stalled while it was running. That suggests a running problem. I do not know what a "wants to start" noise sounds like, so we could be talking about a starting system problem. Clarify whether the starter is cranking the engine at normal speed, or if not, exactly what kind of noise you are hearing.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
LEOPARDLOVE
  • MEMBER
Usually when it has been the battery, when trying to start it, it makes a clicking noise. This noise sounds pretty much how it sounds. When you actually turn on a car but just not quite enough juice.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
JIS001
  • EXPERT
So the engine cranks over slow? Or does it just make one click sound when you turn the key to the run position?
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
LEOPARDLOVE
  • MEMBER
Definitely cranks over slowly.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)
Tiny
SATURNTECH9
  • EXPERT
When you tried to jump start it what happened? Your alternator might have stopped charging.
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Sunday, October 7th, 2018 AT 7:58 PM (Merged)

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